| Make | Model | Engine(s) | Body Code | Years |
| Audi | TT | 1.8T / 3.2L VR6 | 8N | 2000–2006 |
| Austin | America | 1.3L A‑Series | -- | 1971 |
| Volkswagen | Beetle | 1.8T / 2.0L / 2.5L | A4 (PQ34) | 1998–2010 |
| Volkswagen | Golf | 1.8T / 2.0L / VR6 | Mk4 (A4) | 1999–2006 |
| Volkswagen | Jetta | 1.8T / 2.0L / VR6 / 2.5L | Mk4 (A4) / Mk5 (A5) / Mk6 (A6) | 1999–2015 |
| Volkswagen | Jetta City | 2.0L | Mk4 (A4) | 2007–2009 |
| Volkswagen | Touareg | 3.2L V6 / 4.2L V8 / V10 TDI | 7L | 2004–2007 |
🔵 ISUMO® Description • This ISUMO® Engine Cooling Fan Switch Connector provides a secure electrical link between the cooling fan switch and the vehicle’s wiring harness. • Designed as a direct‑fit replacement for OEM connectors used in Audi, Volkswagen, and other applications. • Built with heat‑resistant housing and precision terminals to withstand high‑temperature engine bay conditions. • Prevents overheating issues caused by loose, corroded, or damaged connectors. • Plug‑and‑play installation with OEM‑style fitment.
🔵 Functions • Supplies electrical connection to the cooling fan switch. • Ensures proper fan activation under ECU/temperature switch control. • Maintains stable current flow for consistent cooling fan operation. • Protects against vibration‑induced disconnection. • Supports long‑term cooling system reliability.
🔵 Error Codes • P0480 – Cooling Fan 1 Control Circuit Malfunction. • P0481 – Cooling Fan 2 Control Circuit Malfunction. • P0483 – Cooling Fan Rationality Check. • P0691 – Fan 1 Control Circuit Low. • P0692 – Fan 1 Control Circuit High.
🔵 Symptoms of Failure • Cooling fan not operating or intermittent. • Engine overheating at idle or low speed. • Fan runs constantly or fails to engage. • Burnt or melted connector housing. • Check Engine Light with fan‑related codes. ===================================